Safety device for gas burners and the like



Sept. 22, 1931. THOMAS I 1,824,696

SAFETY DEVICE FOR GAS BURNERS AND THE LIKE Filed July 6. 1929 2 Sheets-Sheet. 1

- INVENTOR WITNESS Geo g? Zfimms JW. fay i ATTORNEY Sept. 22, 1931. G. THOMAS 1,824,696 7 SAFETY DEVICE FOR GAS BURNERS AND THE LIKE Filed July 6. 1929 2 Sheets-Sheet 2 INVENTOR WITNESS 5H3 (5)) d'gvyefiaw ATTORNEY Patented Sept. 22, 1931 UNITED STATES! V GEORGE THOMAS, OFRAHWAY, nEw ERsEY SAFETY nnvxon' non ens iannnnns'annmnn LIKE, f i

' Application filed July 3,1929. Serial No. .376,8 8. 3 I

-My invention relates to safety devices for gas burners and the like and it consists in the constructions, arrangements and combinations herein-"described and claimed.

0 It is an object of my invention to pro:

vide a-safety device of suchv construction as to prevent accidental opening of the valve.

It is a further object of my inventionto 1 provide'a safety device wherein the detent means functions as a retainingmeans for the valve.

A still further object of my invention is to provide a safety. device of simple construction, and one whichwill be liable in a minimum degree to derangement. T

Additional objects, advantages and features of invention will be apparent from the following description and accompanying drawings, wherein,

Figure 1 is a top plan view of my invention applied to the valve of a gas stove burner, t

Figure 2 is a side elevation thereof,

Figure 3 is an end View thereof,

Figure 4 is a cross section on the line 4c4 of Fig. 3, V p t Figure 5 is a cross section on the line 5-5 of Fig. 3,

Figure 6 is a plan view of the combined valve handle and catch,

Figure 7 is a perspective view of the valve and valve handle retaining spring,

Figure 8 is a modified form of retaining spring.

In carrying out my invention I provide a gas burner, which may be of any usual construction having a valve 2. The valve 2 in the present instance, is illustrated as the usual plug valve type having a handle 3 extending at 7 right angles to the plug body 4.

The handle 3 is secured upona shank'5 which is rigidly fixed in the upper portion 6 of the plug 4. From a consideration of Figures 1, 2 and 3, it will be seen thatthe shank 5 extends through the portion-6 of the valve, and is curved downwardly and rearwardly, as at 7 so as to lie in a plane substantially parallel to the handle 3, where it is re'curved,as'at 8,-to provide a loop 9. The terminal of the shank '5 is preferably curved outwardlyas lat-'10. The formation of the handle shank 5 in this manner provides a locking means, for apurpose which will be apparent, as the description proceeds. i

The valve 2 has an inlet 11- suitably connected to a" manifold 12, and an outlet.

pipe 13 connected to the burner-1, as customat. V

vided a plate 1% which as "shown, is'ap'eig' tured and suitably secured to the pipe 13 as by welding" This plate 14 is positioned closely adjacent the valve 2,and'has at its 'lower portion a lateralarin The upper edge ofthe plate 14 -isreeessedas at 16, and a slot- 17 is provided intermediate the length of the plate, this-slot being inthe path movement ofjthe ortion 100i the shank 5,

' The lower portionofth valve plug 4 has an annularrecess 18 immediately outward of the valve body 2, to receive a retaming aswin n0wbe-deseribe Upon the (mtlet :pipe 13, there 4 is pro-Y "A combined valve and alve retaining spring19 is inquntednpon the iir'ni 15 of the plate 14; this spring in the present instance, being forrne'd from a's'ingie strand of wire Attention directed "to' Fig'1ires 3 and .7

wherein it will be seen thatthe-sp'r'ing 19 is formed intermediate its-flength with a heliX'QQ-O'f a size to snugly e ga e the arm 15, as shown-{with extended portions 21 and 22. The portion 21 is bent atright' angles to--the;helix" 20 and terminatesin" a clip member 23. The clip 23 is engaged within the-annular groove-18 of the plug 4 and retains the valve plug 4 s curely seated with in the 'valve body, clearly shown in Fig ure's'2,'3- and 5 The'p'ortion 22- offthe spring 19 1s of'a length'to extend beyond the up er" edge of thefpla'te 14;,a distance,-where it is bentto form-a loop 24, and is continued downwardly so as to crosstheportion 22; The portion 22' terminates in a hook 25 adapted to enga e thenp er; edge of the plate'fby'virtue of-its extension through the recess16'.: Normally,- the portion 22 extends lotw'iithe loop 9 and the platefll i, and

accidental movement.

by virtue of the resilience of the spring 19, the member 22 tends to bear upon the 'inner side of the loop 9 and thus hold the handle 3 and associated parts against accidental movement.

lVith the parts in the positions shown in Figures 1, 2 and 3, in order to turn the valve plugg i, the handle?) is grasped, and at the same time, the loop 24 is pushed inwardly and forwardly toward the open end of the loop 8. At this time, the handle 3 is swung as indicated by the arrow in Figure 1. Such movement will swingthe end through the slot 17 and free the member 22, so that it may spring back to its normal position, shown in Fig. 3. Upon reverse movement of the-handle 3, the loop 24 is again pushed inwardly and forwardly to-v ward the open'end of the loop 8, which will permit theend 10 to swing through the slot 17 in position to receive the member 22 when. released. With return of the member 22 to a position within the loop 8, it willbe ap-- parent that the end 10 will be latched against In Figure 8, I have shown a modified form of retaining spring, in which the member 22 terminates in a loop 24? having a bill 25 arranged to engage astop lugv80. Also, the. member 22 is reinforcedas at 31 to compensate for wear which may occur between, it and the .member 10. r v 7 1 From the foregoingit willbe apparent that I have provided a safety device of extremely simple construction, and one which also provides means-foreffectively retaining the valve in itsengaged. relation with the valve body; v

I claim 1. A safety device for gas valves or the like comprising a valve body, a valve therein having a handle, a recurved extension carried upon" one end of said handle and movable therewith, a'plate carried by saidvalve hav;

.ing a slot in thepath of movement of said extension adapted to receive said extension slo-t adapted to receive said hook upon rotation of said valve in one direction, and a resilient spring disposed between said hook and said plate to latch said valve against accidental movement, said spring extending above said plate and into close proximity of said handle to provide an operating means for releasing saidhook'member,

a. A safety device for gas valves or the like comprising a valve body, a rotatable valve therein having a latching member, and retaining means for said valve having an extension projected into'the path of said locking memberto be engaged thereby to latch said valve against accidental movement.

5. A safety devicefor gas valves orthe like comprising a valve body, a plug valve therein having a latching member,means forrotating said vvalve,.-retaining means upon the lower end of said valvevhaving a resilient extension projected into the path of saidlocking member to be engaged thereby to hold said valve in position, and means upon said extension for releasing said latching member. I

GEORGE THoMAs in one movement of the handle, and a re-' silient spring disposed between saidplate and said extension to latch said valve against accidental movement. I

2. A safety device for valvescomprising a valve body, a rotatable valve therein, a

handle for said valve having an extension rearwardly curved andtermmatlng in a hook, a plate mounted upon said valve having a slot adapted to receive said hook upon rotation of said valve in one direction, and a resilient spring disposed between said hook and said plate to latch said valve against accidental movement. 7 V I s 3. Asafety device for valves comprisinga valve body, a rotatable valve therein, a

handle for said valve havingan'extension I rearwardly curved and terminating in a hook, a plate adj acent said valve. having a 

